A self-cleaning perovskite solar cell and a preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of hot spot effect, reduce the power generation efficiency of solar cells, reduce the transmittance, etc., to improve the light absorption rate, improve the Photoelectric conversion efficiency, the effect of reducing the probability of hot spot effect

Inactive Publication Date: 2018-12-11
VALIANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when solar cells are used outdoors, they will inevitably be covered with dust or organic pollutants, which will reduce the transmittance and reduce the power generation efficiency of solar cells, and uneven pollutants will cause hot spot effects, leading to battery scrapping

Method used

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  • A self-cleaning perovskite solar cell and a preparation method thereof

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Embodiment 1

[0038] A perovskite solar cell comprising sequentially transparent flexible organic or glass substrates 1, TiO 2 Self-cleaning layer, 2. Flexible organic or glass substrate, 3. Front electrode, 4. Hole transport layer, 5. Perovskite absorber layer, 6. Electron transport layer, 7. Buffer layer, 8. Metal electrode, 9 , film, 10, backplane. Its concrete preparation steps are as follows:

[0039] A. Treatment of conductive substrate: flexible organic substrate (PEI, PEN, PET, PI flexible plexiglass) or ordinary glass substrate is used as the substrate, and the square resistance of the front electrode layer (FTO or ITO) is 5-40Ω. The pass rate is 75-90%. Conductive substrate cleaning glass cleaner solution ultrasonic cleaning 10-30min, cleaning ultrasonic cleaning twice, 10-30min each time, ethanol cleaning twice, 10-30min each time, acetone ultrasonic cleaning 10-30min, nitrogen blow dry;

[0040] B.TiO 2 Layer preparation: Add 5mL acetylacetone and 10mL butyl titanate dropwis...

Embodiment 2

[0048] A perovskite solar cell comprising sequentially transparent flexible organic or glass substrates 1, TiO 2 Self-cleaning layer, 2. Flexible organic or glass substrate, 3. Front electrode, 4. Hole transport layer, 5. Perovskite absorber layer, 6. Electron transport layer, 7. Buffer layer, 8. Metal electrode, 9 , film, 10, backplane. Its concrete preparation steps are as follows:

[0049] A. Treatment of conductive substrates: flexible organic substrates (PEI, PEN, PET, PI flexible glass) or ordinary glass substrates are used as substrates, and the square resistance of the front electrode layer (FTO or ITO) is 5-40Ω. The rate is 75-90%. Conductive substrate cleaning glass cleaner solution ultrasonic cleaning 10-30min, cleaning ultrasonic cleaning twice, 10-30min each time, ethanol cleaning twice, 10-30min each time, acetone ultrasonic cleaning 10-30min, nitrogen blow dry;

[0050] B.TiO 2 Layer preparation: 5mL acetylacetone and 10mL butyl titanate were added dropwise ...

Embodiment 3

[0058] A perovskite solar cell comprising sequentially transparent flexible or glass substrates 1, TiO 2 Self-cleaning layer, 2. Flexible organic or glass substrate, 3. Front electrode, 4. Hole transport layer, 5. Perovskite absorber layer, 6. Electron transport layer, 7. Buffer layer, 8. Metal electrode, 9 , film, 10, backboard. Its concrete preparation steps are as follows:

[0059] A. Treatment of conductive substrates: flexible organic substrates (PEI, PEN, PET, PI flexible glass) or ordinary glass substrates are used as substrates, and the square resistance of the front electrode layer (FTO or ITO) is 5-40Ω. The rate is 75-90%. Conductive substrate cleaning glass cleaner solution ultrasonic cleaning 10-30min, cleaning ultrasonic cleaning twice, 10-30min each time, ethanol cleaning twice, 10-30min each time, acetone ultrasonic cleaning 10-30min, nitrogen blow dry;

[0060] B.TiO 2 Layer preparation: 5mL acetylacetone and 10mL butyl titanate were added dropwise to 100mL...

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Abstract

The invention discloses a self-cleaning perovskite solar cell and a preparation method thereof, the perovskite solar cell comprises a glass substrate, The front electrode, the hole transport layer, the perovskite absorption layer, the electron transport layer, the buffer layer and the metal electrode layer laminated in this order from top to bottom. The difference from the prior art is in that a self-cleaning layer is arranged on the upper surface of the glass substrate, and the self-cleaning layer is a TiO2 film layer or a TiO2 film layer doped with Yb3 +, Er3 +, Ho3 + or Tm3 + upconversion ions. The self-cleaning layer has photocatalysis and photoinduced superhydrophilicity. The photocatalysis can degrade organic pollutants on the surface of solar cells, and the photoinduced superhydrophilicity can make the solar cells use natural rainwater to wash away the dust on the surface.

Description

technical field [0001] The invention belongs to the field of photovoltaic materials, and in particular relates to a self-cleaning perovskite solar cell and a preparation method thereof. Background technique [0002] Solar cells have the advantages of environmental protection and abundant energy storage, and are known as the most promising green energy. In recent years, the development of organic-inorganic hybrid perovskite solar cells has been very rapid, and its photoelectric conversion efficiency has reached about 22%. Moreover, perovskite solar cells have abundant raw materials, simple process and low cost, and can be prepared into flexible cells. It has received extensive attention from academia and industry. [0003] The Chinese invention patent with the publication number CN10710891A discloses a wide-spectrum perovskite solar cell and its preparation method. The wide-spectrum perovskite solar cell includes FTO glass substrates, TiO 2 Dense layer, TiO 2 Porous light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/15H10K30/88Y02E10/549
Inventor 罗伟任辉彩庞茂印李雁鸿胡臻玉曹原张江峰
Owner VALIANT CO LTD
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